The ASIMO show in Innoventions is one of the best "unheralded attractions" at Disneyland, imo.
For those who don't know, ASIMO stands for
Advanced
Step in
Innovation
MObility, and is a little humanoid robot created by Honda. The short show features him interacting with a human host, and demonstrates his ability to walk, dance, kick a soccer ball, etc. And, according to
the ASIMO website, the brand new, "running" version of ASIMO should be at DL now. (I will have to check it out when I am there in a few more weeks.)
ASIMO really shows the "magic" of technology. If you do nothing else in Innoventions, I recommend seeing this show. Just ask a Cast Member outside what the show times are. You don't even need to get there early; I've never had any trouble just walking in a few minutes before it starts.